Focal Ligamentum Flavum Hypertrophy with Ochronotic Deposits: An Unusual Cause for Neurogenic Claudication in Alkaptonuria

Neurogenic claudication resulting from focal hypertrophy of the ligamentum flavum in the lumbar spine due to ochronotic deposits has not been reported till date. The authors discuss one such case highlighting the pathogenesis, histological and radiological features. Salient features of management are also emphasized upon.